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经营范围
发明名称
Improvements in or relating to cinematographs
摘要
申请公布号
GB334532(A)
申请公布日期
1930.09.01
申请号
GB19290016713
申请日期
1929.05.30
申请人
HANS KNUDSEN
发明人
分类号
G03B21/32
主分类号
G03B21/32
代理机构
代理人
主权项
地址
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